MICHODOX. 135 



140. Microdon villosus, sp. n. 



c? . Length of the body 12 mm., of the antennae 4 mm. 



A rather hairy species, readily distinguishable owing to the 

 structure and mode of carriage of its antennae. 



Head very broad, distinctly broader than the thorax, bronze- 

 black, finely punctate, moderately shining, clothed with rather 

 long, erect, yellowish hairs, which on the face show golden re- 

 flexions ; frons very broad for a male, the shining black equally 

 facetted eyes being rather small, and without distinct prominent 

 angles towards the middle of frons ; the transverse frontal furrow 

 is, however, well marked ; ocelli rather far apart, arranged in an 

 equilateral triangle ; face gently convex, as broad as the frons, 

 becoming broader below ; it is black in the middle, with a broad 

 yellow border on each side ; jowls with a small, broad, but shallow 

 pit on each side; opening of buccal cavity small, the .proboscis 

 sc-arcely projecting. Antennae erect, entirely black, the first joint 

 shining and almost bare ; second joint very small ; third dull, 

 curved, almost arched, thickened towards the middle, about four 



Fig. 24. Microdon villosus. sp. n. Head of male. XlO. 



and a half times as long as the first ; arista situate at base of third 

 segment, of a dark yellowish colour, thin, about half the length of 

 the third joint. Thorax shining aeneous, very finely punctate, 

 clothed on clorsum with rather long and dense bright reddish hair, 

 which becomes yellowish on the pleurae, the hind part of which is, 

 however, bare as usual. Scutelluni small, semicircular, shining 

 black, clothed with long yellowish hair, with an unarmed hind 

 border. Squama!* whitish, with yellow borders and rather long 

 white fringes ; halteres pale yellowish. Abdomen at base broader 

 than the thorax, attenuated behind, conical, the second segment de- 

 pressed in the middle, but not produced at the sides ; third segment 

 about as long as the second, fourth two and a half times the length 

 of the third; all the sutures are distinct; the abdomen is black, dull, 

 dark yellowish in the middle at the base, with a few rather long 

 yellowish hairs on the sides at the base and on the hind border of 

 the basal segments ; on each side of the second and third segments 

 there are two indistinct oblique stripes of yellowish pubescence 



